COLUMBUS, Ind. (Jan. 23, 2012) - Cummins Inc. (NYSE: CMI) announced today its ISX12 Heavy-Duty engine with significant fuel economy improvements for regional haul, vocational and specialty applications. The ISX12 leverages the strength and performance of its predecessor, the ISX11.9, to deliver fuel economy improvements of up to 5 percent in regional haul applications and by as much as 12 percent in vocational applications.

The ISX12 is a step above the previous model in this power range and realizes improved product characteristics through optimized calibrations. "Cummins is excited about the opportunity to offer customers this evolution of our 12-liter product," said Jeff Jones, Vice President - Sales and Market Communications. "Through continuous product improvements, we are able to introduce the new ISX12 to better meet the demands of our customers and to provide value that only Cummins products can bring to their operations," added Jones.

The compact ISX12 will deliver improved fuel economy, reliability and proven performance across the broad range of applications for which it is ideally suited. Featuring better pulling power, excellent driveability and strong clutch engagement torque, the ISX12 is designed to work in rigorous duty cycles, including those for work trucks such as dump and mixer trucks, and refuse applications. Additionally, full suites of horsepower and torque ratings are available for fire and emergency vehicles, recreational vehicles and motorcoaches as well as regional haul and day cab operations in Class 8 trucks.

Cummins ISX12 utilizes common components with the industry-leading big-bore engine, the Cummins ISX15, including an enhanced cooled Exhaust Gas Recirculation (EGR) system, a single VGT(TM) Turbocharger and the proprietary XPI fuel system. Like the complete lineup of on-highway Heavy-Duty and MidRange engines, the ISX12 utilizes Cummins Aftertreatment System with Selective Catalytic Reduction (SCR) technology.

The ISX12 has a full power range ideally suited to meet the needs of regional hauling and LTL distribution operations, with standard ratings ranging from 310 hp to 425 hp (231-317 kW) and SmartTorque ratings ranging from 330 hp to 425 hp (246-317 kW). SmartTorque ratings unleash higher torque in the two top gears so that drivers can climb steep hills with fewer downshifts. For vocational applications, the ISX12 is an exceptional choice, with a high power-to-weight ratio and 800 lb-ft (1085 N•m) of clutch engagement torque. Eight vocational and five refuse ratings are available, along with integrated Rear Engine Power Take-Off (REPTO), Front Engine Power Take-Off (FEPTO) and a choice of hydraulic drive options.

The ISX12 will be in full production in March 2012.

About Cummins Inc.Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems, controls, air handling, filtration, emission solutions and electrical power generation systems. Headquartered in Columbus, Indiana (USA), Cummins employs approximately 40,000 people worldwide and serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor locations and approximately 6,000 dealer locations. Cummins earned $1.0 billion on sales of $13.2 billion in 2010. Press releases can be found on the Web at cummins.com or cumminsengines.com. Follow Cummins on Twitter at http://twitter.com/cumminsengines and YouTube at http://youtube.com/cumminsengines.

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